Sonic Robo Blast 2 Kart - A super fun and challenging Mario Kart style game made in the original Doom engine.

CatsEyeXI - An unofficial, custom Final Fantasy XI MMO server with fast leveling, solo play and many quality of life features. (Following guides is still recommended, because it's a complicated and vague game at the best of times!)

ETLegacy - A free to play version of Wolfenstein: Enemy Territory, a fun and fast team-based first person shooter.